If Fēng has appeared in your reading, the book is naming a configuration of peak abundance. Thunder and lightning together — the moment when everything is fully present, fully visible, fully active. The hexagram appears when the reader is at, or near, the noon of something: a project, a relationship, a season of life. The light is at its fullest. By definition, the next motion is downward.
Classical commentary reads this hexagram with a particular tenderness. The book does not celebrate the peak as if it were a destination. It names it accurately as a position, recognises that it is transient, and asks the reader to inhabit it without grasping. 勿憂 — do not grieve — is the line that does the most work. The descent is coming; grieving it before it arrives spoils the peak itself.
What the book counsels is the full presence at the high point, used for the work that only the high point makes possible. The image's instruction — 折獄致刑 — decide cases, carry out judgments — is exact about this. The noon is when the shadows are shortest; matters can be seen for what they are. The reader is being asked to use the unusual clarity for the decisions that have been waiting on it.
Fēng's failure mode is the attempt to extend the noon indefinitely. The book is firm. The hexagram appears when the reader is at fullness and is being asked to neither grasp nor mourn it. The next hexagram in the sequence — Lǚ, the Wanderer — is what arrives when the noon ends. Use the noon. When it ends, walk into Lǚ with the same equanimity that the judgment asks of you here.